Wheel arrangement for agricultural machinery and the like



E. L. vARLo. wHEEL ARRANGEMENI FOR AGRICULTURAL MACHINERY AND THE LIKE.

APPUCAT|ON HLED .IAN-2|' |919- 1,4:13,303. Patented Apr. 178, 1922.

, ERIK YnAUB/iinsertaffinit), orA KoNGsBERfG, NORWAY.;

Vfwnnnn Anitancniannfr realiteit'iynJnTnJaA:Llvacifiinnr..afroV rnnfiiixnj.

To all 'co/0m it may concern:

Be it known thaty I, ERIK LAunrrsnN VAnLo, of Kongsberg, in the Kingdom of Norway, a subject of the,A King of Norway,

have invented certain newand useful lmprovements in Wheel Arrangements'for Agricultural Machinery and the like; and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable othersv skilled in the art to which it appertains to'make anduse theV same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

It is usual in agricultural machinery to provide the wheels with ribs or the like in order to make the wheel grip the groundl firmly.

The ordinary ribs used on these kinds of' wheels have however the disadvantage that they act tozbreak up the ground Vduring the rotation of the wheel, and for this reason the ribs generally have to be made quite low, sok that their gripping effect is often not sufficient for agricultural machinessuch as mowing machines where the machinery is driven from the wheels. Y Y

The present invention has Vfor its object a wheel arrangement by means of whichfit is made possible to make the gripping ribs orV Preferably one disc of the lwheel be mounted on a trunnionV adapted to pivot about the axis of the other wheel in the man-V ner of a crank so that the position of the wheels with` regard to eachV other may be changed with the object of changing the position of the gripping teeth.

On the drawing:

Fig. l is a side viewof'the wheel.

Fig. 2 is a vertical sectional view of the same. Y Y v Fig. 3 is a horizontal sectional view ofthe wheel and f Y Fig. 4f is a side viewsimilar to Fig.l l, but with the wheels in a different position.

The gripping teeth l are formed on or fastened to one side of the series of links 2 which are pivotally ccnnected-tcrwh'eels 3, 4,' as by trunnions 5, 6, respectively.- A stationary shaft 7 is carried in any suitable;V

manner by the Vmachinery frame and fur* nishes a support for wheel 4;. A second shaft or wheel axle 8 which is offset from and rig-'V idly, connected to shaft 7 provides aV supporti*` for wheel 3. Obviously, the axialvdistance j between the trunnions 5, 6 is thel same asthe axial offset of shaftv8 from shaft 7. VWheels 3, 4 are of the same diameter andrwithftheY wheels resting on level ground the shafts .7 and 8 liein the samehOriZOntalplane.V The trunnions 5, 6 of therespective'links 2 'are '7o Varranged in planes parallelA to the plane 'through shafts 7, 8, and it therefore follows f that the links 2 will lie in planes substan-` i i tially parallelV tothe surface of the ground 5 p upon whichthe wheels rest. A worm l0 is carried on a support 13 which is mounted on A the machinery frame 14, and said worm l0.

engages a Agear 1l which is` carried by and il connected to shaft 7 as by means ofkey 12.'l

With lshafts 7, 8 lying kin a `horizontal planel the links 2 will be lhorizpontal'and theV teeth .l .will be kdirected towards kor 4away fromthe ground accordingto-the location of'- shaft 8 withrespe'ct to the shaft 7. As shownV in .'Fig. l, shaft 8 lies tofthe left ofrshaft 7 andthe teeth l are in engagement withjthe soY ground. 1 For traveling along roads etc.'. the teeth l are turned into position away fromw` the ground by rotating shaft` 7 vthrough worm l0 and gear 11 to throw the shaft 8 to the opposite side ofshaft7, as is shown in Fig. a.

I claim i' l, A wheel arrangement for agricultural machinery or the like comprising a shaft, a second shaft rigidly connected and parallel to the first shaft and located in substantially the same horizontal'plane, a pair of wheelmembers resting on the ground Yand journaled 'on said shafts. bearings along the ein axial distance betweenr said shafts, ground engaging means carried by one face ofsaid V cumfer'ence of said wheel members, links i providedl with trunnions which arejourj nalled in said bearings, the axial Vdistance between said trunnions being equal to the links, and means for shifting the relative po-j Y sition of said shafts for throwing the ground engaging face of said links into and out of operative position. u v

2. A wheel arrangementxfor agricultural machinery or the like as specifiedin claim 1,

in which the means for shifting the relative position of the shafts comprises a Worm earried by the machinery frame7 and a gear mounted on one of said shafts.

3. A Wheel arrangement for agricultural machinery or the like as specified in claim l, in which the means for shifting the relative position of said shafts revolves said second shaft through an angle of 180o about said first shaft, thereby revolving said links l0 through an angle of 180.

In testimony thatI claim the foregoing as my invention7 I have signed my name in presence of two subscribing' Witnesses.

ERIK LAURITSEN VARLO.

Witnesses:

DAGNY Voss, C. VARMAN. 

